ui: added shortcut and menu item for "To overview" and updated documentation

src/lib_gui/qt/element/QtSearchBar.cpp

@@ -24,7 +24,7 @@ QtSearchBar::QtSearchBar()
 
 	m_homeButton = new QPushButton(this);
 	m_homeButton->setObjectName("home_button");
-	m_homeButton->setToolTip("show overview");
+	m_homeButton->setToolTip("to overview");
 	m_homeButton->setAttribute(Qt::WA_LayoutUsesWidgetRect); // fixes layouting on Mac
 	layout->addWidget(m_homeButton);
 	connect(m_homeButton, SIGNAL(clicked()), this, SLOT(homeButtonClicked()));
@@ -112,7 +112,5 @@ void QtSearchBar::refreshStyle()
 
 void QtSearchBar::homeButtonClicked()
 {
-	SearchMatch match = SearchMatch::createCommand(SearchMatch::COMMAND_ALL);
-	MessageSearch msg(std::vector<SearchMatch>(1, match));
-	msg.dispatch();
+	MessageSearch(std::vector<SearchMatch>(1, SearchMatch::createCommand(SearchMatch::COMMAND_ALL))).dispatch();
 }

src/lib_gui/qt/window/QtMainWindow.cpp

@@ -30,6 +30,7 @@
 #include "utility/messaging/type/MessageRefresh.h"
 #include "utility/messaging/type/MessageResetZoom.h"
 #include "utility/messaging/type/MessageSaveProject.h"
+#include "utility/messaging/type/MessageSearch.h"
 #include "utility/messaging/type/MessageSwitchColorScheme.h"
 #include "utility/messaging/type/MessageUndo.h"
 #include "utility/messaging/type/MessageWindowFocus.h"
@@ -400,6 +401,11 @@ void QtMainWindow::find()
 	MessageFind().dispatch();
 }
 
+void QtMainWindow::overview()
+{
+	MessageSearch(std::vector<SearchMatch>(1, SearchMatch::createCommand(SearchMatch::COMMAND_ALL))).dispatch();
+}
+
 void QtMainWindow::closeWindow()
 {
 	QApplication* app = dynamic_cast<QApplication*>(QCoreApplication::instance());
@@ -604,6 +610,10 @@ void QtMainWindow::setupEditMenu()
 	}
 
 	menu->addAction(tr("&Find"), this, SLOT(find()), QKeySequence::Find);
+
+	menu->addSeparator();
+
+	menu->addAction(tr("&To overview"), this, SLOT(overview()), QKeySequence::MoveToStartOfDocument);
 }
 
 void QtMainWindow::setupViewMenu()

src/lib_gui/qt/window/QtMainWindow.h

@@ -118,6 +118,8 @@ public slots:
 	void openRecentProject();
 
 	void find();
+	void overview();
+
 	void closeWindow();
 	void refresh();
 	void forceRefresh();